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| author | Eric W. Biederman <ebiederm@xmission.com> | 2012-11-16 03:03:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-18 20:32:44 -0500 |
| commit | dfc47ef8639facd77210e74be831943c2fdd9c74 (patch) | |
| tree | 5c7e9f93a999bf1d38b216af346ce2159e5f18ec /net/ipv6 | |
| parent | 464dc801c76aa0db88e16e8f5f47c6879858b9b2 (diff) | |
| download | linux-3.10-dfc47ef8639facd77210e74be831943c2fdd9c74.tar.gz linux-3.10-dfc47ef8639facd77210e74be831943c2fdd9c74.tar.bz2 linux-3.10-dfc47ef8639facd77210e74be831943c2fdd9c74.zip | |
net: Push capable(CAP_NET_ADMIN) into the rtnl methods
- In rtnetlink_rcv_msg convert the capable(CAP_NET_ADMIN) check
to ns_capable(net->user-ns, CAP_NET_ADMIN). Allowing unprivileged
users to make netlink calls to modify their local network
namespace.
- In the rtnetlink doit methods add capable(CAP_NET_ADMIN) so
that calls that are not safe for unprivileged users are still
protected.
Later patches will remove the extra capable calls from methods
that are safe for unprivilged users.
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/addrconf.c | 6 | ||||
| -rw-r--r-- | net/ipv6/addrlabel.c | 3 | ||||
| -rw-r--r-- | net/ipv6/route.c | 6 |
3 files changed, 15 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index b24b4de5cd2..e21bdb92565 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3514,6 +3514,9 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) struct in6_addr *pfx; int err; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); if (err < 0) return err; @@ -3584,6 +3587,9 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) u8 ifa_flags; int err; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); if (err < 0) return err; diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c index ff76eecfd62..b106f80be0c 100644 --- a/net/ipv6/addrlabel.c +++ b/net/ipv6/addrlabel.c @@ -425,6 +425,9 @@ static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh, u32 label; int err = 0; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy); if (err < 0) return err; diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 021a48e8a5e..c6215e2b9d7 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2446,6 +2446,9 @@ static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *a struct fib6_config cfg; int err; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + err = rtm_to_fib6_config(skb, nlh, &cfg); if (err < 0) return err; @@ -2461,6 +2464,9 @@ static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *a struct fib6_config cfg; int err; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + err = rtm_to_fib6_config(skb, nlh, &cfg); if (err < 0) return err; |